2/12/2024 0 Comments Which term refers to raised fields made from rich soil dredged up from the lake bottomOver time, these waterways can become filled with sediment that makes them difficult to navigate and sometimes pose an environmental hazard. We depend on various waterways for several daily functions, ranging from transporting goods to commercial fishing and recreation. In coastal areas, sediment accumulation can cause beaches to erode. It can also lead to contamination that poses a threat to aquatic plant and wildlife. For instance, it can reduce the depth of the waterway and prevent the passage of ships. Sedimentation is a naturally occurring process where silt, sand and other debris accumulate on the bottom of rivers, lakes, canals or streams over time. An excessive build-up of sediment can cause a series of issues. Dredges are specialized pieces of equipment that create a vacuum to suck up and pump out the unwanted sediment and debris. Toltec and Aztec people also practiced raised-field agriculture on the shore of Lake Texcoco, where these fields were known as chinampas.Table Of Contents – Easily Jump To What You’re Looking For:ĭredging means the process of removing accumulated sediment from the bottom or banks of bodies of water, including rivers, lakes or streams. Ancient raised-field agriculture has also been documented in Central America at Pulltrouser Swamp in Belize, where it was practiced by the Maya civilization. In highland Bolivia, where this was utilized by the Tiwanaku culture near Lake Titicaca, this technique is known as Waru Waru or camellones. Pre-Hispanic raised fields are known from the region near Santa Cruz de Mompox in northern Colombia and in the Llanos de Moxos region of lowland Bolivia. Examples of raised field agriculture can be found among some Pre-Hispanic cultures of Latin America, such as those from tropical lowlands and the Budi Lake Mapuche. In agriculture, a raised field is a large, cultivated elevation, typically bounded by water-filled ditches, that is used to allow cultivators to control environmental factors such as moisture levels, frost damage, and flooding.
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